Why is brake fluid puking out the resevoir cap?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevytruckguy70 · 04-23-2014, 05:01 PM

As BLT gmc mentioned above, be sure to check the power brake booster (if you have power brakes). Master cylinders sometimes leak out of the rear seal. If you have manual brakes the fluid will show on the inside of your truck around the drivers feet. If you have power brakes the vacuum booster gets the fluid and the engine sucks the fluid up and burns it out the exhaust which would explain the no leak issue. I've had several older cars to this, both manual and power brakes.

Good luck. Hope this helps.

04-23-2014, 05:01 PM	#26
chevytruckguy70 Registered User Join Date: Nov 2011 Location: Lanesville, IN Posts: 104	Re: Why is brake fluid puking out the resevoir cap?? As BLT gmc mentioned above, be sure to check the power brake booster (if you have power brakes). Master cylinders sometimes leak out of the rear seal. If you have manual brakes the fluid will show on the inside of your truck around the drivers feet. If you have power brakes the vacuum booster gets the fluid and the engine sucks the fluid up and burns it out the exhaust which would explain the no leak issue. I've had several older cars to this, both manual and power brakes. Good luck. Hope this helps. __________________ Only Two...... Only two have laid down their lives for you, Jesus Christ and the American GI. 2007 Chevy 2500HD 4x4 Duramax 1970 Chevy K20 (SOLD) 1972 Chevy C15 (1/2 C10, 1/2 c20) 1970 Chevy C10 (parting out)

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